| Nilwala River | |
| Pushpin Map: | Sri Lanka |
| Subdivision Type1: | Country |
| Subdivision Name1: | Sri Lanka |
| Length: | 72km (45miles) |
| Source1: | Sinharaja Forest Reserve |
| Mouth Location: | Matara |
| Mouth Coordinates: | 5.95°N 112°W |
| Basin Size: | 922km2 |
The Nilwala is a river in Southern Province in Sri Lanka. It originates in Sinharaja Forest Reserve[1] and discharges into the sea at Matara.
The river is 72km (45miles)[2] long and has a drainage basin of 922km2.[3]